Don't delay going to the Apple Store / mailing them in for repair. My right airpod has had static issue for much of this year. I thought firmware update would eventually fix it. However, just learned it was a known issue and about the repair program a few days ago. When I looked up the duration, it's 3 years from purchase day. For me, that expired last month, so I might not get a free replacement. I'm going into the Apple Store today for repair, so we'll see if I have pay for repairs or not.
My money is on Apple telling me "you snooze you lose" and charging me for repairs.